The iPhone 5s has a handy Touch ID sensor where you can scan your finger to unlock your phone. It's great when it works, but for some people it's not working all the time. If you're struggling with it, Macworld's put together a guide for getting the best scans of your fingers so they'll actually unlock your phone.

Macworld has four main tips to get a better scan of your finger:

Adjust your grip: Hold you phone naturally when you scan your fingers. Don't awkwardly put it on a tabletop or anywhere else.

Scan multiple fingerprint angles: Scan your thumbs multiple times. You get five storage slots for fingerprints and you can use them on the same finger multiple times.

Use a different finger: If you have a mark or cut on your finger that's causing problems, don't use it.

Make sure your finger touches the metal ring: Make sure you contact the steel ring around the Home button when you're unlocking your phone.

With that, you should be able to unlock your phone a lot easier. Head over to Macworld for a few more tips to get more out of the Touch ID.